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J. GASTEIGER. STEAM BoILBR 0R OTHER PURNAGB.

No. 448,808. Patented 1481.24, 1894.

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Patented Mar. 24, 1891.

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i UNITED STATES PATENT OFFICE;

JOHANN ens'rnienn, or vinNNA, nUs'rRIA-HUNGARY,"

STEAM-BOILER OR OTHER FURNACE.`

SECIICTON forming part of Letters Patent No. 448,808, dated March 24, 1891.

` Application led April 22, 1890. Serial No. 348,985. (No model.)

To all whom zit may concern: i

Be it known that I, JOHANN Gnsrntenn, engineer, a subject ot' the Emperor of Austria- Hungary, residing at 3 Renniweg, Vienna, in the Empire of Austria -I-Iungary, have Yinvented certain new and useful Improvements in Steam-Boiler and other Furnaces, of which the following is a specification.

According to. this invention I construct a steam-boiler or other furnace in such manner that the coal used is distilled and the gas produced caused to pass over a coketire, up through which steam is made to rise and to be consumed, togetherwith the gas which rises up from the coke. The coal to be distilled is either placed onto a plate situated between the front door and the nre-bars or into chambers at the two sides of the tire.

In Figures l and 2 I have shown a steamboiler furnace with distilling-chambers at the two sides. Fig. l is a longitudinal section, In Figs. 3 and a I have shown a steam-boiler furnace with a plate at the front, onto which the coal to be distilled is to be placed. Fig. 3 is alongitudinal section, and Fig. 4 a f ront elevation, with one half in section.

In Figs. l and 2, a are the distilling-chambers at the sides of the fire. o are the tirebars on which a coke-tire is to be maintained. c is the ash-pit. CZ are pipes for conducting air to the space below the distilling-chambers. CZ are passages by which air can pass to the back of the fire. (Z2 are passages for allowing air to pass to the ash-pit. c are pipes beneath the distilling-chamber, by which gases are led from the top of the distillingchambers and discharged through outlets c into the lire-chamber above the glowing coke on the tire-bars. d3 are orifices immediately below the gas-outlets c. Through these oriiices air is supplied to the gas just as it issues from the outlets c and effects the combustion of the gas. a are doors by which coal can be supplied into the distilling-chambers. a2 are doors by which, when coal has been distilled in these chambers, the resulting coke can be discharged onto the nre-bars. 72. is the stean1-boiler, which is shown as being of the ordinary locomotive type. g. is a pipe by which steam can be conveyed from the boiler to the ash-pit below the fire-bars. f is a damper by which the passing away ot' the burned gases from the furnace vcan be controlled.

In Figs. 3 and 4:, A is the plate at the front of the furnace. A is a door at the front. l5 are the tire-bars C is the ash-pit. D are pipes for introducing heated air to the ashpit. D are pipes for admitting heated air to the irechamber at the back above the tirebars. II is the steam-boiler. G is a pipe for admitting steam from the boiler to the ashpit. F is a damper for controlling the passing away of the burned gases.

In starting the furnace a necessary quantity of coke is placed in a glowing condition onto the nre-bars of thefurnace. At the same time coal is placed into the distilling-chambers a, Figs. l and 2, or onto the plate A, Figs. 3 and 4. As the coal is distilled and the gases are driven out they must pass over the glowing coke, to be there consumed. The steam which is conveyed from the boiler through the pipe g to below the fire-bars not only keeps the bars cool, but also as it rises up through the glowing layer of coal is converted into combustible gases, which in the process of combustion develop an unusually large degree of heat. In order to insure the combustion of any gas which may not have been entirely consumed over the glowing layer of coke, intensely-heated atmospheric air is in troduced at the back of the iirechamber through the air-passages d in Figs. l .and 2 and D in Figs. 3 and 4. The pipes by which air is admitted to the furnace must be so arranged that the air requisite for the burning process shall become intensely heated, and it is very important that no air shall enter the furnace except through these heating-pipes.

Furnaces constructed to act in the manner above described are of very great value, because through the complete combustion obtained in them a heat unusually free from smoke is produced, which can be conveyed into chambers or kilns in which bricks or pottery or various other things which require to be exposed to a very high temperature are placed.

Boilers also can be intensely heated.

The furnaces. can. be used not onlyfor fixed boilers and furnaces, but also locomotiveboilers, and in particular for ships boilerfurnaces, in which an enormous saving of ICO coal and other fuel will be effected, to say nothing of other advantages.

\Vith ships boilers especially, in order lo prevent the rivets or bolts from becoming leaky and to protect the boiler-plates, the lirechamber is lined with lire-brick, as shown by the drawings, Figs. 3 and l.

I claim- 1. A steam-boiler or other furnace having tire-bars on which a glowingfire is to be maintained, a closed space or chamber without grate-bars away from the fire for containing coal to be distilled, a passage from such space or chamber conveying the gas arising' from the distillation to the lire over the lire-bars, an ash-pit below the lire-bars, a boiler heated by the fire, a pipe for admitting steam from the boiler to the ash-pit below the I'lrebars, and air-admission pipes heated by the lire for admitting air for supliorting combustion.

2. A steam-boiler or other furnace having a central combustion-chamber provided with ire-bars ou which a glowing re is to be maintained, a closed chamber at each side of the fire for containing coal to be distilled, a passage between these chambers for the products of combustion from the fire on the grate-bars, pipes or passages conveying gas arising from the distillation in the closed chamber and delivering it to the lire above the grate-bars, an aslrpit below the fire-bars, and airadmission pipes heated by the lire for admitting air for supporting combustion.

JOHANN }ASTEIGER. Tit/messes:

G. F. MARKEN, Notary Public, London.

'T. F. BARNES,

2S Southampton Buildings, London, Nourgfs 

